Ur-Scheme: A GPL self-hosting compiler from a subset of R5RS Scheme to fast Linux x86 asm Ur-Scheme is a compiler from a small subset of R5RS Scheme to Intel x86 assembly language for Linux. It can compile itself. It is free software, licensed under the GNU GPLv3+. It might be useful as a base for a more practical implementation (or a more compact one), or it might be enjoyable to read (particular